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Balancing equations & identifying reaction types

Authored by Mary Andrews

Chemistry

10th Grade

NGSS covered

Used 58+ times

Balancing equations & identifying reaction types
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10 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The correct coefficients to correctly balance the following equation

____ C7H16 + ____ O2 --> ____ CO2 + ____ H2O

from left to right would be:

2, 22, 14, 16

1, 5, 3, 4

1, 15/2, 7, 8

1, 11, 7, 8

2.

MULTIPLE SELECT QUESTION

5 mins • 1 pt

Which of the following reactions reactions would be classified as single replacement?

____ P4 + ____ O2 --> ____ P2O3

____ Al + ____ HCl --> ____ H2 + ____ AlCl3

____ SO2 + ____ Li2Se --> ____ SSe2 + ____ Li2O

____ K + ____ Cl2 --> ____ KCl

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What coefficient would go in from of hydrogen cyanide (HCN) in order for this chemical equation to be correctly balanced?

__ HCN + ___ CuSO4 --> ___ H2SO4 + ___ Cu(CN)2

4

3

2

1

Tags

NGSS.HS-PS1-7

4.

MULTIPLE SELECT QUESTION

5 mins • 1 pt

Identify the double replacement reactions below?

_ Na3PO4 + _ KOH --> _ NaOH + _ K3PO4

_ AgNO3 + _ CuCl2 --> _ Cu(NO3)2 + _ AgCl(s)

_ N2 + _ H2 --> _ NH3

_ Al + _ HCl --> _ H2 + _ AlCl3

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Choose the combustion reaction that is correctly balanced.

1 C2H2 + 5 O2 --> 2 CO2 + 1 H2O

1 C2H4 + 3 O2 --> 2 CO2 + 4 H2O

2 C2H6 + 7 O2 --> 2 CO2 + 3 H2O

1 CH4 + 2O2 --> CO2 + 2 H2O

Tags

NGSS.HS-PS1-7

NGSS.HS-PS1-2

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What is happening in this reaction?

H2CO3(aq) --> H2O(l) + CO2(g)

Carbonic acid, H2CO3 is being combusted.

Carbonic acid, H2CO3 is being rearranged.

Water and carbon dioxide are products of decomposition.

Carbonic acid, H2CO3 is single replacement.

Tags

NGSS.HS-PS1-7

7.

FILL IN THE BLANK QUESTION

5 mins • 1 pt

When a single reactant produces two or more products, we know a __________________ reaction has taken place.

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